Safe worker.
Saved in:
| OCLC: | 2450337 |
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| 企业作者: | |
| 语言: | English |
| 出版: |
Chicago,
National Safety Council.
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| 主题: | |
| 格式: | 序列 Note that CRL will digitize material from the collection when copyright allows. |
| 出版: | v. 1- May 1928- |
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| 实物描述: | v. ill. 16 cm. |
| 出版频率: | Monthly. |
| ISSN: | 0896-9051 |